Dyfyniad APA

Lefton, L. A., & Garrison, M. (1994). Psychology (5th ed.). Allyn and Bacon.

Dyfyniad Arddull Chicago

Lefton, Lester A., and Mark Garrison. Psychology. 5th ed. Boston: Allyn and Bacon, 1994.

Dyfyniad MLA

Lefton, Lester A., and Mark Garrison. Psychology. 5th ed. Allyn and Bacon, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.